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Air pressurized water information


A typical American APW extinguisher

Air pressurized water (APW) extinguishers are a type of fire extinguisher that use ordinary water (H2O) to suppress fire. The water is propelled by ordinary air (atmosphere), pressurized in the extinguisher. They are also known by the slang term water can. Although only effective on Class A fires, they have the advantages of being inexpensive to build and maintain, and leaving no special chemical residue when used.[1]

  1. ^ "Air-Pressurized Water Extinguishers". University of South Carolina. Retrieved February 1, 2024.

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Air pressurized water

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Air pressurized water (APW) extinguishers are a type of fire extinguisher that use ordinary water (H2O) to suppress fire. The water is propelled by ordinary...

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Glossary of firefighting equipment

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manage or direct a water stream. APW Air-pressurized water fire extinguisher, partially filled with water and then pressurized with an air pump; popular in...

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Compressed air

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breathing pressurized air due to proportionally higher partial pressure. Air compressors, filters, and supply systems intended for breathing air are not...

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Cabin pressurization

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experimental pressurization systems saw use during the 1920s and 1930s. In the 1940s, the first commercial aircraft with a pressurized cabin entered...

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Atmospheric water generator

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the air below its dew point, exposing the air to desiccants, using membranes that only pass water vapor, collecting fog, or pressurizing the air. AWGs...

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Water gun

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principle as the pressurized reservoir system, but instead of pressurizing the reservoir, a separate, fixed volume chamber is included on the water gun into which...

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Carbonated water

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combined with carbon dioxide from pressurized tanks at approximately 100 psi (690 kPa). The pressurized carbonated water then flows either directly to taps...

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Water rocket

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A water rocket is a type of model rocket using water as its reaction mass. The water is forced out by a pressurized gas, typically compressed air. Like...

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Water organ

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of air which is inserted into a cistern of water. The air is pushed into the reservoir with hand pumps, and exits the reservoir as pressurized air to...

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Compressed air foam system

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CAFS may also refer to any pressurized water style extinguisher that is charged with foam and pressurized with compressed air. It has later been proven...

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Aerated water

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effective if the amount of sulfur in the water is relatively low. During aeration, water is pumped into a non-pressurized tank and agitated. This physically...

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Bleed air

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Lavatory water storage tanks are pressurized by bleed air that is fed through a pressure regulator. When used for cabin pressurization, the bleed air from...

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Water

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turbines that turn generators. Pressurized water is used in water blasting and water jet cutters. High pressure water guns are used for precise cutting...

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Pressure tank

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held water with an air space above the water which would compress as more water entered the tank. Modern systems isolate the water from the pressurized air...

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Super Soaker

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toy pressurized water gun.[better source needed] In 1982 Air Force and NASA engineer Lonnie Johnson conceived of the idea of a pressurized water gun after...

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Nike Air Max

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pouches filled with pressurized gas, visible from the exterior of the shoe and intended to provide cushioning to the underfoot. Air Max was conceptualized...

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Reverse osmosis

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industrial processes and the production of potable water. RO retains the solute on the pressurized side of the membrane and the purified solvent passes...

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Boiling water reactor

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electricity-generating nuclear reactor after the pressurized water reactor (PWR), which is also a type of light water nuclear reactor. The main difference between...

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Dissolved air flotation

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also introduced. This results in saturating the pressurized effluent water with air. The air-saturated water stream is recycled to the front of the float...

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Air cycle machine

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An air cycle machine (ACM) is the refrigeration unit of the environmental control system (ECS) used in pressurized gas turbine-powered aircraft. Normally...

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Aerial firefighting

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Rescue Wing, California Air National Guard drop water on the Rim Fire near Yosemite, California, August 26, 2013 Airtankers or water bombers are fixed-wing...

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Water Warriors

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Super Soaker 50, pressurized reservoir systems are still common for small water guns. A water gun using this system is pressurized by air being pumped and...

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Environmental control system

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aircraft is an essential component which provides air supply, thermal control and cabin pressurization for the crew and passengers. Additional functions...

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Industrial water treatment

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separation. Whereas for Dissolved air flotation, pressurized air is pumped into the wastewater. The pressurized air then forms small bubbles which adhere...

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Atmospheric pressure

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between an air space inside or beside the body and the surrounding gas or liquid. Cabin pressurization – Process to maintain internal air pressure in...

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Natural refrigerant

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least 99.5% pure ammonia. Water and oil cannot exceed 33 and 2ppm respectively. Ammonia refrigerant is stored in pressurized containers. When the pressure...

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Air compressor

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to adiabatic heating, air compressors require some method of disposing of waste heat. Generally this is some form of air- or water-cooling, although some...

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